Pantsed

My ex-girlfriend dumped me even though I have cancer.
My sister knocked her out in a mall and then she pantsed her.
She had to walk around the mall in her underwear.
People pointed and laughed, I wish I had been there.
You may want to dump somebody who has cancer but you mustn't and you can't.
If you're a woman who dumps me, my sister will knock you out and you will be pantsed.